Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

The coastal ocean current flows in which region and direction?

When waves strike the shore obliquely, they push water toward the beach at an angle. To conserve mass, the water must return offshore along the coast, creating an alongshore flow. This longshore (littoral) current travels parallel to the shoreline and is typically strongest in the offshore region just outside the surf zone, where wave energy is still being redirected but the water is deeper. So the coastal current that results runs along the beach, in the offshore region outside the surf zone, rather than directly shoreward or seaward. The exact alongshore direction (northward or southward) depends on the angle of wave approach, not a fixed compass bearing.

When waves strike the shore obliquely, they push water toward the beach at an angle. To conserve mass, the water must return offshore along the coast, creating an alongshore flow. This longshore (littoral) current travels parallel to the shoreline and is typically strongest in the offshore region just outside the surf zone, where wave energy is still being redirected but the water is deeper.

So the coastal current that results runs along the beach, in the offshore region outside the surf zone, rather than directly shoreward or seaward. The exact alongshore direction (northward or southward) depends on the angle of wave approach, not a fixed compass bearing.